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Non‐noble metal catalysts are known for their efficient catalytic performance for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). Metal organic gels (MOGs) can be considered as a promising electrocatalyst owing to the diverse physicochemical properties but usually suffer from its poor electrical conductivity and catalytic stability. Here, a...
Water stability is a crucial issue always addressed for commercial practical application of perovskite quantum dots (QDs). Recent advances in ligand engineering for in situ synthesis of water‐stable perovskite QDs have attracted growing interest. However, the exact mechanism remains unclear. Here, the function of 4‐bromobutyric acid (BBA) and oleylamine (OLA) is systematically studied in water‐stable...
Double Perovskites
In article number 2305219, Youwen Long, Runze Yu, and co‐workers report the high‐pressure synthesis of a Pb2CoMoO6 double perovskite oxide and unprecedently find antiferroelectricity‐induced negative thermal expansion during the antiferroelectric transition as well as the antiferroelectric phase itself in a wide temperature range across the room temperature.
Materials with negative thermal expansion (NTE) attract significant research attention owing to their unique physical properties and promising applications. Although ferroelectric phase transitions leading to NTE are widely investigated, information on antiferroelectricity‐induced NTE remains limited. In this study, single‐crystal and polycrystalline Pb2CoMoO6 samples are prepared at high pressure...
Superhydrophobic and slippery lubricant‐infused surfaces have garnered significant attention for their potential to passively transport low‐viscosity liquids like water (1 mPa s). Despite exciting progress, these designs have proven ineffective for transporting high‐viscosity liquids such as polydimethylsiloxane (5500 mPa s) due to their inherent limitations imposed by the homogenous surface design,...
The evolution and formation process of two‐dimensional metal‐organic frameworks (MOFs) primarily arise from the anisotropic growth of crystals, leading to variations in photocatalytic performance. It is crucial to achieve a synergistic combination of anisotropic electron transfer direction and dimension reduction strategies. In this study, a novel approach that effectively blocks crystal growth accretion...
Space charge transfer of heterostructures driven by the work‐function‐induced built‐in field can regulate the electronic structure of catalysts and boost the catalytic activity. Herein, an epitaxial heterojunction catalyst of CoO/Mo2C with interfacial electron redistribution induced by work functions (WFs) is constructed for overall water splitting via a novel top‐down strategy. Theoretical simulations...
Compared with the traditional electrolysis of water to produce hydrogen, urea‐assisted electrolysis of water to produce hydrogen has significant advantages and has received extensive attention from researchers. Unfortunately, urea oxidation reaction (UOR) involves a complex six‐electron transfer process leading to high overpotential, which forces researchers to develop high‐performance UOR catalysts...
The compatibility of crystallinity, stability, and functionality in covalent organic frameworks (COFs) is challenging but significant in reticular chemistry and materials science. Herein, it is presented for the first time a strategy to synthesize directly amino‐functionalized COF with stable benzodiimidazole linkage by regioselective one‐step cyclization and aromatization. Bandrowski's base with...
A general method for the direct synthesis of highly homogeneous and dense polymerized carbon nitride (PCN) nanosheet films on F: SnO2 (FTO) is developed. Detailed photoelectrochemical (PEC) water‐splitting studies reveal that the as‐synthesized PCN films exhibit outstanding performance as photoanode for PEC water‐splitting. The optimal PCN photoanode exhibits excellent photocurrent density of 650 µA...
Anisotropic Nanostructures
In article number 2300688, Yun Yan, Haibing Wei, Qingrong Qian, Jie Zhang, and co‐workers report an exquisite crystallization‐directed ionic self‐assembly (CDISA) to build size‐controllable anisotropic nanostructures via a hierarchical self‐assembly process, involving a requisite aqueous pre‐assembly to micelles and a subsequent evaporation‐induced self‐assembly to nanoprisms...
The creation of anisotropic nanostructures with precise size control is desirable for new properties and functions, but it is challenging for ionic self‐assembly (ISA) because of the non‐directional electrostatic interactions. Herein, the formation of size‐controllable tetragonal nanoprisms is reported via crystallization‐directed ionic self‐assembly (CDISA) through evaporating a micellar solution...
The localized surface plasmon resonance (LSPR) is one of the important properties for noble metal nanoparticles. Tuning the LSPR on demand thus has attracted tremendous interest. Beyond the size and shape control, manipulating intraparticle coupling is an effective way to tailor their LSPR. The charge transfer plasmon (CTP) is the most important mode of conductive coupling between subunits linked...
The crystallographic orientation of polycrystalline perovskites is found to be strongly correlated with their intrinsic properties; therefore, it can be used to effectively enhance the performance of perovskite‐based devices. Here, a facile way of manipulating the facet orientation of polycrystalline perovskite films in a controllable manner is reported. By incorporating a cross‐linkable organic ligand...
Mono‐chemotherapy has significant side effects and unsatisfactory efficacy, limiting its clinical application. Therefore, a combination of multiple treatments is becoming more common in oncotherapy. Chemotherapy combined with the induction of ferroptosis is a potential new oncotherapy. Furthermore, polymeric nanoparticles (NPs) can improve the antitumor efficacy and decrease the toxicity of drugs...
Carbon monoxide (CO) is considered as the second gasotransmitter involved in a series of physiological and pathological processes. Although a number of organic fluorescent probes have been developed for imaging CO, these probes display excitation within the ultraviolet or visible range, which restrict their applications in the complex biosystems. In the present work, a strategy is developed to construct...
It is challenging for traditional wound dressings to adapt to the complex and changeable environment, due to the lack of stable, efficient, and continuous bactericidal activity. They also cannot be satisfied in a multifunctional sensing platform to reconstruct skin sensory functions for human health monitoring. A multifunctional hydrogel dressing is developed here for the treatment of infected wounds...
Treatment for spinal cord injuries (SCIs) is often ineffective because SCIs result in a loss of nerve tissue, glial scar formation, local ischemia and secondary inflammation. The current promising strategy for SCI is the combination of bioactive materials and cytokines. Bioactive materials support the injured spinal cord, stabilize the morphology, and avoid excessive inflammatory responses. Fat extract...
Developing efficient and robust non‐precious‐metal‐based catalysts to accelerate electrocatalytic reaction kinetics is crucial for electrochemical water‐urea splitting. Herein, Fe‐doped NiS–NiS2 heterostructured microspheres, an electrocatalyst, are synthesized via etching Prussian blue analogues following a controlled annealing treatment. The resulting microspheres are constructed by mesoporous nanoplates,...
Aluminum–air batteries (AABs) are deemed as a potential clean energy storage device. However, exploiting high‐efficiency and stable oxygen reduction reaction (ORR) electrocatalysts in AABs is still a challenge. Iron phthalocyanine (FePc) shows a great prospect in ORR but still far from Pt‐based catalysts. Here, the hybrid electrocatalysts of monolayer FePc and hollow N,S‐doped carbon spheres (HNSCs)...
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